Package creation practice

Practicing to publish a basic package with sample functionality.

Usage

You can install using:

npm i @dalponte.m/practice-pkg

The package export two modules:

var practicePkg = require("@dalponte.m/practice-pkg")

const { NumberPrinter, LanguageHelper } = practicePkg
console.log(NumberPrinter, LanguageHelper)

NumberPrinter.integerPrinter()
// Print exercice 1, described bellow

Promise.all([
  LanguageHelper.countCountries(),
  LanguageHelper.mostLanguagesCountries({
    byLanguages: ["de"],
  }),
  LanguageHelper.countLanguages({
    byCountries: ["US", "BE"],
  }),
  LanguageHelper.mostLanguagesCountries(),
  LanguageHelper.mostCommonLanguage(),
]).then((ex2) =>
  ex2.forEach((result, i) => console.log(`Item ${i + 1}:`, result))
)
// Print exercice 2, each index as a item. Described bellow

About the project

The following exercises are provided by the company Visual Nuts:

Exercise 1: Write or describe an algorithm that prints the whole integer numbers to the console, start from the number 1, and print all numbers going up to the number 100. However, when the number is divisible by 3, do not print the number, but print the word 'Visual'. If the number is divisible by 5, do not print the number, but print 'Nuts'. And for all numbers divisible by both (eg: the number 15) the same, but print 'Visual Nuts'.

How will you keep this code safe from bugs? Show how you would guarantee that this code keeps working when developers start making small feature adjustments. (Maybe we would want to print the first 500 numbers, ...).

Exercise 2: Image you have a set of data in JSON, describing official languages spoken by countries, as such:

[
  {
    "country": "US",
    "languages": ["en"]
  },
  {
    "country": "BE",
    "languages": ["nl", "fr", "de"]
  },
  {
    "country": "NL",
    "languages": ["nl"]
  },
  {
    "country": "DE",
    "languages": ["de"]
  },
  {
    "country": "ES",
    "languages": ["es"]
  }
]

Write a function in javascript that:

1. returns the number of countries in the world;
2. finds the country with the most official languages, where they officially speak German (de);
3. counts all the official languages spoken in the listed countries;
4. to find the country with the highest number of official languages;
5. to find the most common official language(s), of all countries.